Observed arrival · 2026-11-06
Shim: a second set of checks for AI SDK upgrades
Shim scans an AI SDK 6-to-7 upgrade for semantic changes a codemod and typecheck can miss, then offers fixes as a tested pull request.
- For
- Teams upgrading applications from AI SDK 6 to 7
- Worth noticing
- The page reports 14 public upgrade PRs and five diffs blocked by a separate judge; agent runs cost $0.06–$5.63 per repository.
Field notes
The documented flow starts with checks already passing: installation runs with scripts disabled, then typechecks and tests establish the baseline. After the official codemod, Shim applies rules first and an agent where needed, reruns the checks, and sends the diff to a separate judge; regressions become issues rather than pull requests. The page lists three semantic traps—multi-step token usage, tool-call history, and runtime rejection of system prompts—and says its scan is local, read-only, and requires Node 22 or later.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue